Question

in addition to driving the synthesis of atp and the reduction of nadp+ to nadph, light stimulates the calvin cycle by increasing the ph of the thylakoid lumen; reduction of some calvin cycle enzymes increasing the ph of the stroma; reduction of some calvin cycle enzymes decreasing the ph of the stroma; reduction of some calvin cycle enzymes decreasing the ph of the stroma; oxidation of some calvin cycle enzymes increasing the ph of the stroma; oxidation of some calvin cycle enzymes

Explanation:

During light - dependent reactions, protons are pumped into the thylakoid lumen, increasing its acidity (lowering pH) and increasing the pH of the stroma. The increased pH in the stroma activates some Calvin - cycle enzymes. Also, the reduction of NADP+ to NADPH and synthesis of ATP during light reactions provide energy and reducing power for the Calvin cycle.

Answer:

increasing the pH of the stroma; reduction of some Calvin cycle enzymes